Air-cooled condenser



Feb. 2,1926. 1,571,524

, F. LJUNGSTROM ET AL AIR GOOLED CONDENSER Filed Au ust 21, 1922 r 9\ 9 f l ,1 M a 9 I0 '2 5 6 7 10 v If Patented Feta. 2, 19236.

UNHTEQ STATES PATENT OFFICE.

FREDBJIK LJUNGSI'RQM, OF LIDINGO-BREVIK, AND IBIRGER LJUNGSTBDM, OF STOCK- HOLM, SWEDEN, ASSIGNGRS TO AKTIEBOLAGET LJUNGSTRbMS ANGTURBIN, OF STQCKHGLM, SNEDEN, A. CGBPORATION.

AIR-COOLEI) CONDENSER.

Application filed august 21, 1922. Serial No. 583,460.

5 respectively, at Lidingo-Brevik, Sweden,

and Stockholm, Sweden, have invented cer tain new and useful Improvements in Air- Qooled Condensers, of which the following specification.

In condensers for locomotives it has previously been suggested to construct the same of flattened pipes through which the steam is passed and condensed by means of air forced about the cooling elements. It has also eeen proposed to place such elements at right angles to the running direction of the train and to divide them into groups, each cooling elementbeing' provided with pressed up s or the like. When the cooling elements are placed right angles to the runnin direction it is diitnult to give them suthcient rigidity so that they may be ahle to sustain the stresses no; from the varying; speed of the locomotive. Supposing the locomotive to possess certain velocity which is suddenly braked. the elementsplaced at right angles to the running direction and onl fixed at both ends will bend in the middle owing to the inertia,,and on account ot this action there will be a danger o l the elements or their fastening devices on the steam pipes of the condenser heing deformed and lcalrs occurring; in the condenser.

Each cooling" element consisting of a flat toned pipe in well-l nown manner prridcd at the sides with lu or inwardly proiectinp; dents bearing against each other, tor the run-pose at preventing the elements from being; completely flattened. In practice it has however proved. diliicult to so manutacturc the elements as to prevent furthe; flattening;- ot the same under vacuum. n a slight flattening; or each element in 'ndinal direction ot the whole condenser will result in a rather considerable play.

This invention relates to an arrangen'ient 1 s ch condensers tor staying; the cooling;-

are inserted while the condenser is under vacuum, it being: then possible to compress the elements by means of said supports, whereby the elcmentsma-y be prevented from moving; towards each other during the shakings of the carriage.

The accompanying drawings illustrate diae'.'a-mmatically an embodiment of the in vention. Fig. 1 is a section through a condenser stayed in this manner. Fig. 2 is a partial section on the line 2'2 of Fig. 1 on an enlarged scale, 7

Fig. 3 is an enlarged fragmentary sectional detail of the collecting pipe showing one of the cooling elements supported therein and the connection of the pipe with the adjacent rail,

Fig. 1 is a fragmentary plan view of the invention, and

Fig. 5 is an enlarged vertical sectional detail of the collecting pipe mounted on therail and showing; one of the supporting stays connected therewith.

Reiterringrto Fig. 1, 1 designates the elements of the air-cooled condenser and 2 a receptacle for water serving in well-known manner as a steam accumulator for the aircooled condenser and being under vacuum. The exhaust steam of the locomotive enters the receptacle 2 for instance abovethe level of the liquid, is then conducted through the pipe 3 to the pipe 1 and passes to the elements through collecting pipes 9 attached at ends of the elements and inserted in a rail 9* which is provided with apertures opening to the steam distributing pipe 4. During the condensation the steam passes downwards through the elements-1 to the collecting pipes 10 mounted on rails which by means of apertures are connected with longitudinally extending pipes 11 connected at one or more points by means of pipes 5 with the condenser receptacle 2. The collecting: pipes 10 are attached to the rails 1O by means of holders 12. and similar arrange merits may he provided at the collecting pipes 9. G denotes a fan actuating the cooling air necessary for the condensation, the air passing' in the direction of the arrow 7. As shown in Figs. 3 and l, the cooling elements 1 are collected into groups each comp-risingthree elements connected to a common collecting; pipe 10. It will appear from these figures how the elements 1 are provided with pressed up ribs 17.

According; to the invention one or more such groups comprising three elements are replaced by a stay consisting of a rigid rectangular pipe 15 or the like filling entirely the space formed by the removal of snch a group of elements. Such a stay may preterably be connectedwith a collecting pipe 10 similar to those of the groups of elements as shown in Fig. 5. In such case the ends of the stays are inserted in apertures in the rails 9 and 10 described above, said aper-' cooling: elements arranged side by side and extending between said rows of collecting pipes, the opposite ends of each cooling element being; inserted, in an opening of a collect-inp; pipe of each row and communicating therewith, supporting stays arranged substantially parallel to the elements and bctween same, and means for maintaining said supporting stays in place between the ele ments.

2. A cooler for locomotive condensers, comprising; two rowsott collecting pipes. said rows extending substantially longitudinally ot the locomotive,v each collecting pipe having; openings therein, cooling elements arranged side by side and extending; between said rows of collecting; pipes, the opposite ends of each cooling element being inserted in an opening of a collecting pipe of each row. and communicating therewith. and supporting stays arranged substantially parallel to the elements and between same, the opposite ends of each supportingstay being inserted in an opening of opposed u! lecting pipes of each row of such pipes.

3. A cooler for locomotive condensers comprising two rows of collecting pipes said rows extending substantially longitu dina-lly oi the locomotive, each collecting pipe having openings therein, cooling ele ments arranged side by side and extending between said rows of collecting pipes and divided int. a ninnber of groups, the opposite ends of the cooling elements of each group being); inserted in an opening; of a collecting pipe of each row and connnunicating with said collecting); pipe, and supporting: stays arranged substantially parallel to said elements and between said groups of elements, each of said supporting stays corresponding to one of said groups of elements and having the respective ends inserted in opposed collecting pipes of each row of such pipes.

i. A cooler for locomotive condensers, comprising" two rows of collecting pipes, said rows extending: substantially longitudinally of the locomotive, each collecting pipe hat ing openings therein, cooling elements arranged side by side and extending between said rows of collecting pipes, the opposite ends of each cooling: element being inserted in an opening of opposed collecting pipes of each row and communicating therewith, supporting stays arranged substantially earallel tothe elements and between the smile and connecting pieces extending along; the condenser for reinforcing said stays.

A cooler for locomotive condense con'iprisinp; two rows of collecting pipes. each pipe provided with openings, flatten d cooling elements arranged side by side and extending between said rows of collecting pipes. the opposite ends of each cooling; element being inserted in an opening of a collecting pipe of each row and communicatin; therewith, and means to keep the elements closely bearing on each other Yen when vacuum prevails therein.

In witness whereof we have hereunto set our hands.

FREDRIK LJUNGSTRUt I. BIB-GER LJUNss'rnoM. 

